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Posted to issues@flink.apache.org by "Timo Walther (JIRA)" <ji...@apache.org> on 2017/01/16 15:49:26 UTC
[jira] [Created] (FLINK-5514) Implement an efficient physical
execution for CUBE/ROLLUP/GROUPING SETS
Timo Walther created FLINK-5514:
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Summary: Implement an efficient physical execution for CUBE/ROLLUP/GROUPING SETS
Key: FLINK-5514
URL: https://issues.apache.org/jira/browse/FLINK-5514
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Timo Walther
A first support for GROUPING SETS has been added in FLINK-5303. However, the current runtime implementation is not very efficient as it basically only translates logical operators to physical operators i.e. grouping sets are currently only translated into multiple groupings that are unioned together. A rough design document for this has been created in FLINK-2980.
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